Universal headstock



Sept. 19, 1939. M; e. SMALL 2,173,769

UNIVERSAL HEADSTOCK Original Filed July 21, 1936 J/m'yare/ 66mm.

ATTORNEYS Patented Sept. 19, 1939 PATENT OFFICE UNIVERSAL HEADSTOCK Margaret G. Small, Lakehurst, N. J.

Application July 21, 1936, Serial No. 91,759 Renewed March 9, 1939 1 Claim.

The invention relates to a machine headstock and more especially to a universal rotating headstock.

The primary object of the invention is the provision of a headstock of this character, wherein a driving shaft is journaled so that such shaft can be operated at any desired angle within the headstock and locked in its angularly adjusted position, the stock being useable in lathes, band saws, shapers, rotary grinders, buffers and with flexible shafts.

Another object of the invention is the provision of a headstock of this character, wherein the angular adjustment of the power shaft is had with accuracy and such adjustment can be carried out with dispatch and in conformity with the work to be operated upon.

A further object of the invention is the provision of a headstock of this character, which is simple in its construction, thoroughly reliable and effective in its operation, devoid of allowing the power shaft to become wobbly and assured of trueness under adjustment, strong, durable, and inexpensive to manufacture and install.

With these and other objects in View, the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated in the accompanying drawing, which discloses the preferred embodiment of the invention and pointed out in the claim hereunto appended.

In the accompanying drawing:

Figure 1 is a side elevation of a headstock constructed in accordance with the invention.

Figure 2 is an end elevation thereof.

Figure 3 is a horizontal sectional view taken along the longitudinal central axis of the power shaft.

Figure 4 is a fragmentary side elevation of a lathe showing the headstock associated therewith.

Figure 5 is a side elevation of the headstock employed with a grinding disk or wheel.

Figure 6 is a side elevation of the headstock employed with a circular saw.

Figure '7 is a side elevation of the headstock having associated therewith a flexible drive shaft.

Figure 8 is a side elevation of the headstock in use in a shaper.

Figure 9 is a side elevation of the headstock associated with a band saw.

Similar reference characters indicate corresponding parts throughout the several views in the drawing.

Referring to the drawing in detail, particularly Figures 1 to 3 inclusive, A designates generally a headstock which in this instance comprises a U-shaped base Ill carrying at its side flanges ll opposed side cheeks l2, these rising vertically in spaced parallel relation to each other, being bolted as at l3 or otherwise fastened to the side 5 flanges H of the base I 0. Formed in the side cheeks l2 of the headstock are registering circular openings for accommodating a rotatable cylindrical bearing l4 which is externally shouldered at l5 for abutting the inner faces of the 10 side cheeks I2 concentrically of the openings for said bearing so as to avoid any lateral shifting of the latter when turned or adjusted.

The side cheeks l2 are each horizontally slitted at I6 and built upon such cheek at opposite sides of this slit are ears I! for accommodating a nutcarrying bolt l8 so that the bearing I4 can be clamped in said cheeks to hold such bearing in an adjusted position.

The bearing l4 between the cheeks 12 of the headstock A has fitted therein a power or driving shaft I9 fitting anti-friction means 20 as built within the said bearing l4. Thus by rotation of the bearing M the shaft I9 can be swung to any angular position in reverse directions, say for example a ninety degree angle, or in other words, either end of the shaft can be moved up or down ninety degrees in any desired angle.

The shaft l9 as usual has fitted thereto stepped pulleys 2| for accommodating a power belt (not shown).

In Figure 4 of the drawing the headstock A is associated in a wood working lathe and its shaft 22 carries a face plate 23 for supporting a chuck 24 or other accessory to be used in the lathe.

In Figure 5 of the drawing the power shaft 25 of the headstock carries at opposite ends grinding wheels or disks 26.

In Figure 6 of the drawing the power shaft 27 of the headstock has fitted thereto a disk or rotary saw 28. r

In Figure 7 of the drawing the headstock has its power shaft coupled with a flexible shaft 29 for the driving of the latter.

In Figure 8 of the drawing the headstock 3!! is arranged for service in a shaper and in such use the adjustable table or work bed can be eliminated.

In Figure 9 of the drawing the headstock is associated with one of the pulleys 3i for a band saw 32.

The headstock hereinbefore described is adaptable for many uses in Varying wood working machines.

The outer face of one of the cheeks l2 of the headstock A concentric to the bearing [4 is provided with a scale 33 for coaction with a companion scale 34 provided on one end edge of the said bearing next to the scale 33 so that it can be determined with accuracy the angular adjustment of the shaft 2| when turning the bearing l4 thereof.

What is claimed is:

A headstock comprising a pair of spaced vertically arranged cheeks fixedly held and having split upper ring-like clamping portions registering with each other in their offset relation one to the other, a cylindrical bearing journaled at its ends in said ring-like portions for rotation on a horizontal axis and having external annular abutments engaging the said cheeks for holding the bearing against lateral shifting movement, a driven shaft journaled in the bearing for rotation at right angles thereto and vertically swingable between the cheeks on rotation of the cylindrical bearing, means engageable with the split portions of said cheeks for contracting the same about the ends of said cylindrical bearing, and a pulley fixed to the shaft and wholly within the cylinder.

MARGARET G. SMALL. 

